JPS58161654A - Support structure of axle in truck for low-speed car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a wheel axle support structure for a bogie of a vehicle that travels at low speeds and mainly in a straight line or on a private road, such as a wheel axle of a railway vehicle.

[Technical background of the invention and its problems]

Industrial vehicles currently manufactured generally only run at low speeds and mainly on straight tracks 1 without making many bends, but they are similar to the bogies of general railway high-speed vehicles and have a wheel axle support structure. I'm taking it. In other words, in the conventional wheel axle support structure, as shown in FIGS. A vertical motion dampening device 6 is disposed on the side, and the axle box body 4 is integrally protruded from the bogie underframe 5 with a criss-crossed ring portion 5a (= an inverted U-shape provided). ``Anteroposterior sliding plates 8.8 are interposed in the axle box guard 7 and slidably fit into the axle box guard 7 so as to be movable at 17°r h F', and -) side sliding plates are provided between the protrusion 4a of the coaxial box body 4 and the axle box guard 7. 9. With the configuration shown in FIG. 7, a vertical motion damping effect can be performed while receiving the axial force of the wheel set 2, and traction force can be transmitted between the wheel set and the underframe 5. An axle box 9 retainer 10 is installed at the lower end of the axle box guard 7 to prevent the axle box body 4 from falling even when the vehicle bogie is suspended in the air, and to prevent the axle box guard 7 from being deformed by the vehicle body load or traction force. 1
, 11.

Such a wheel shaft support structure has a complex structure and is theoretically necessary for general high-speed vehicle bogies, but it would be unnecessary and unnecessary to use it for industrial vehicles that run only on straight tracks at low speeds. It must be said that there were many problems.

[Purpose of the invention]

This invention was made in view of the above circumstances, and is extremely simple in structure and meets the requirements for use as a wheel shaft support structure for a wheel bogie that runs only on straight tracks at low speeds, and is extremely rational and waste-free. The aim is to provide what is not available.

[Summary of the invention]

This invention provides a V-shaft hole that penetrates the axle box body in the downward direction, avoiding the bearing, and is equipped with an axle box retaining seat that hangs from the bogie frame and fits loosely into the sliding hole. It has a very simple structure in which a long guide support rod is provided, and the bearing in the axle box is of a type that receives the moment in the bending direction of the wheel set, and it absorbs the vertical motion while receiving the axial force of the wheel set 2. A wheel axle support structure for a wheel bogie that can operate in a straight line at low speeds, can transmit traction force to and from the underframe, and does not cause the axle box to fall even when the vehicle bogie is lifted. It is economical, rational, and fully functional to adopt as a system.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIG. 3 and FIG. 1184. In the drawings, parts having the same configuration as those shown in FIGS. 1 and 2 above are denoted by the same reference numerals to simplify the explanation. Therefore, the axle box body 4A that supports the end of the wheel axle 2 via the bearing 3A has a projecting portion 4 on the rear side.
Aa, and a sliding hole 12 is formed vertically through the protruding portion 4Aa. Further, the bogie underframe 5 does not have the crisscross-shaped frame portion 51 or the axle box guard 7 shown in FIGS. 1 and 2, and is interposed above the axle box body 4A as shown in FIG. Underframe member 5 that receives the upper surface of the vertical shock absorber 6
b is provided, and a projecting portion 5c is provided on the rear side of this underframe member 5b.
is provided in a protruding manner, and by tightening the nut 14 with the upper end screwed into the protruding portion 5c, a long guide support rod 13 is formed.
is fixed in a hanging state, and this guide support rod IS is loosely fitted into the sliding holes 12 of the four axle boxes from above to below so that the axle boxes 4A can be moved up and down. It is now supported by An axle box retaining seat 15 is attached to the lower end of the guide support rod 13 with a nut 16. On the other hand, the bearings 3M housed in the axle box body 4A are of cartridge type and have two sets of tapered rollers 3A, J.
It is of a type that receives a moment in the bending direction of the wheel set 2 using Aa.

With the axle support structure having the above-described configuration, the axle box guard and the like can be omitted, and the structure of the bogie underframe 5 can be greatly simplified. In addition, a guide support rod 1 is inserted into the sliding hole 12 of the shaft box body 4mm.
3 penetrates with a slight gap, allowing the four axle box members to move up and down by the action of the vertical movement shock absorber 6.
Moreover, traction force can be transmitted between the axle box body 4A and the guide support rod. Next, the tilting motion of the wheel set 2 due to the difference in the amount of deflection of the left and right vertical motion shock absorbers 6 is caused by the tilting motion of the axle box 4 relative to the guide support rod 13
This is allowed by the play of the sliding hole 12 of A. Next, the axial force of the wheel set 2 acting on the four axle boxes is extremely small because the vehicle speed is low and the vehicle only runs on a straight track, but it is equal to the deviation between the guide support rod 13 and the center axis of the wheel set 2. It comes to act as a bending moment. However, in order to withstand this bending moment, the three bearings are arranged in an indirect type using tapered rollers JAa and JAa, and the right-angled extension intersections of the tapered surfaces have a sufficient interval, so that the tapered rollers JA'a , JAa expands in the axial direction, increases the acting force, and stops the receiver. Also, when lifting the vehicle truck by jacking up, etc.
Since the projecting portions 4Aa of the four axle box members come into contact with the retaining seat 15 of the guide support rod 13, the four axle box members do not fall off from the underframe 5.

In addition, the inner surface of the sliding hole 12 of the four axle box bodies and the guide support rod 1
3 slide on each other, it is possible to interpose a bushing or a liner with a low friction coefficient in the sliding hole 12, and the sliding hole 12 can be slightly displaced in the wheel axis direction. It is also possible to have a long hole-like cross section. In order to buffer the displacement in various directions, a cushioning material such as a rubber plate may be interposed between the bearing 3 and the four axle boxes.

〔Effect of the invention〕

Since this invention has been made as described in detail above, the axle box body that receives the wheel set via the bearing can be supported by a single guide support rod so as to be able to buffer the vertical movement, so the construction is very simple and the structure of the bogie underframe is very simple. This is a very rational and practically effective bogie that can be used for low-speed vehicles, such as industrial vehicles that mainly run on straight tracks at low speeds, and is functionally satisfactory.

[Brief explanation of drawings]

Fig. 1 is a side view showing a conventional example, Fig. 2 is a partially sectional plan view of the same, Fig. 3 is a side view showing an example of the present invention, and Fig. 4 is a partially sectional plan view of the same. . 1...Wheel, 2...Wheel axle, 3,3A...Bearing, J
Aa... Taper, roller, 4, 4 people... Axle box body, 4
M...Protrusion, 4Aa...Overhanging part, 5...Bolly underframe, 5a...Frame part, 5b...Underframe member, 5G...Overhanging part, 6...Upper and lower Motion control device, 7...Axle box guard, 8,
9... Liner, 10... Axle box 9 retainer, 11... Bolt, 12... Sliding hole, 13... Guide support rod, 14
... Nut, 15... Retainer seat, 16... Nut. Applicant's agent Patent attorney Takehiko Suzue Figure W Figure 2v4-31: [Figure 3 Flash 14

Claims (1)

[Claims] In an axle box body containing a bearing that supports the wheel axle is placed below the bogie frame with a lower motion shock absorber interposed therebetween, an E lower part of the axle box body that avoids the bearing is placed below the bogie frame. A sliding hole penetrating therebetween is provided, and an elongated guide support rod with an axle box retaining seat that hangs from the bogie frame and loosely fits into the sliding hole is provided, and a bearing inside the axle box body. A wheel axle support structure for a low-speed axle bogie, characterized in that the wheel axle is of a type that receives a moment in the bending direction of the wheel axle.